Phonograph control



1. HOFFAY.

l PHONOGHAPH CONTROL. APPLICATION FILED JUNE 26,4916.

1,349,763. Patented Aug. ,17, 1920.

2 SHEETS-SHEET 2.

// ///////////lW//l/l//I//l/l /i Q'a/M ATTORNEYS oNlTED STATES JOSEPH norFAY, F NEW vomi, 1v. Y.

i5-Menos.

PHONOGRAPH CONTROL. p

Specification of Letters Patent. Patented Al|u- 17, 1920.

Application filed June 26, 1916. SeralNo. 105,908.

To all whom, t may concern:

lle it known that l, Josine-i l-lorrav, a

cilizfon olf the Republic olf Mexico, and a resi.`

dent ol? New Yorl ,iin the county of New 1fork and State oi New York, have invented certain new and useful improve` monts in phonograph Controls, ol which the tol lowingr i a specification.

This invention relates to starting and .stopping mechanisms Ytor turntables, and particnlarly to mechanisms .for automatically stopping the operation ot a phonograph at a selected point, as for example, at the end oil a record, and a general. object oi' the invention is to provide n'iechanisln of this character' which will. require the settingr olf the mechanism for automatic stopping` oli the phonograph before the phonograph can be successfully operated to play a record.

lu automatic stopping devices heretofore employed upon phonographs, so muehfmanilmlation has beenrequired to set the devices for stopping the phonograph and the setting of the devices has been so uncertain, that even when such devices are incorporated 4in phonographs, they are rarely used. lu the mechanism which is the object of the present invention, the setting device is so associated with the tone arm that unless the operator positions the tone arm `before starting theturntable at approximately the point upon the record where he wants the playing to stop, the phonograph can not be siiooessfully` operated to efectthe desired plaving'result. i

in important -Feature oi'4 the invention is the provision in automatic stoppixipf mechanisms for l'jhonographs, of an adjustable member which automatically follows the tone arm when the turntable is stationary and which is operativelj,7 connected to the stopping mechanism in any tone arm position when the turntaliile is started or released.

My invention is `fully described in the'following specification, of which the accom-I,

pauyinfg drawings form a part.v in which like characters reiter to like parts in each olf the views, and in Whichz- Figure l is a fragmentary plan view of a phonograph, partly broken away, with my device applied thereto, `in position for setting the stop mechanism previous to starting the phonograph, the stylus` being at approximatelv the end of the selection. on the record g de pr z v 4., i big. 2 is a similar view but showing the stopping mechanism bringing the phonorcndition oli the selection, has just passed the point winch it had occupied when the stop mcchaui n was set previous to starting the phonograph Fig. 3 is an enlarpgml section taken on the hue SMB oi Fig. l, with the starting lnxtton essed after the stop mechanism has been set, and alter the depression oi which button the stylus has been moved manuallv to the beginning of the record, as indicated by dotted lines in Fig. l;

Fijn .4E is a section talen on the line L-l ol Fig. 2, after the stop mechanism has lnought the phonograph to a stop;`

Fig. 5 is a section taken on the line o-5 ot Fig. 2, `after the phonogaph has been stopped;

Fig; G a bottoni plan view oi one member of a bell-crank which I employ in the stopl` mechanism; and i Fig. 7 is a top plan view of the complemental member.

Referring to the drawings, 8 represents the base plate of a phonograph which carries the tone-arm 9 provided with the souudbox .l0 and stylus 11 and with a trip 12, and which, also carries the turntable 13 for a record "operable b v means oi' the usual or any desired motor,` not shown.

Arranged upon the base plate 8, beneath the turntable, is a post l5 the upper end of which "is braced by means oi" ab 'acltet 16, said post serving,r as apivotVfor two levers '1.7` and '1S held in light contact by means of".

coil springs '19` and 20 under normal oondi tions, the former bearing; airainst the under side of the l'n'acket i6 and the latter resting: Aupon a lever. 2l. 'vertically slidable on the postlfi and havingr its tulcrmn in a support 22, preferably upon `a knife-edge, the outer end of said lever 21. being bored. for the lpassage` of' a plunger 223 `havin;r a button 24 thereon and vertically movablein the `base plate 8. i

The lever 21 carries a pad 25 ofsuitable material adapted to bear ami-inst the under side of the turntable lf3 to serve as a brake therefor when `the plunger Q3 is in raised po sition, Fig. 4 but released from the same when said plunger is in depressed position, Fig, 3, thereby preventingr or permitting phonograph operation.`

The plunger 23 reduced in `vilialrnetmr at mph to a stop when lthe stylus, after the 26, intermediate its length, and is guided in a plate 27 shown as of triangular form, and the said plunger is passed through an elongated. slot 28 in the lever 18 which is of Ysuch angular formation as to be passed the plunger in raised position and to brake ltheturntable, F ig. 4, but if the plunger be manually depressed the brake pad releases the turntable and the reduced portion 26 Vmoves into the horizontal plane of the lever V18, Fig. 3, and the spring 29 tends to draw the lever 18 to the right to lock the plunger Yin such depressed position. vlf however, in a manner to be explained, the lever 18 is dra-wn to the left, by a power greater than that of the spring 29, the plunger is thus released and is drawn upwardly by means of the lever 21, at which time the brake pad is again operative and the lever 18 is locked against movement toward the right because of the plunger-at its normal diameter. 1

` The contacting surfacesof the levers 17 and .1 8 are milled, scored, abraded, or rough- Y ened, whereby said levers may move upon 3 5 eachother when no power is applied to hold them together but, when such power is applied, said levers will be locked together l ofi-the lever 1 15 as its-pivot. Y

.The coil springs 19 and 2O normally hold the milled surfaces of ther levers 17' and 18 together in a readily yielding manner but,

and jointly form a bell-crank with the post `when the lever 21 Vis-swung on its fulcrum by theV depression ofthe plunger '23, the milled surfaces of thelevers17 and 18 are forcedtightly together and jointlyY form a unit ofthe levers, regardless of what the relative positions of the said levers'17 and 18 ihad been previously. -This constitutes onerof Vthe essential features of my invention inasmuch as, when the plunger is raised, a 'sprin-gBO always maintains the outer end 7 against the trip 12 of the tone arm,'said spring being connected with thebracket 16,' and providea stop 31 on said bracket for limiting the movement of thelever 17 tothe right, Figs. 1 and 2.V

. llVith the plunger raised and the turntable locked, if the tone arm should be manually carried toward the Vperiphery of the record as indicated by dottedlines in Fig. 1, the lever 17 will rotate on the post 15 to cause the outer end thereof to bear against the trip 12 because of the spring 30, up to the `limit of thelstop 31, andif the plunger should at this time be depressed to start the phonograph by releasing the brake pad from the turntable the inner end of the lever 21 will rise and force the milled surfaces of the levers 17 and 18 together in a relatively immovable manner with the former still bearing against the trip l2, with the result that the tone arm is prevented from feeding inwardly.

If, now, the tone arm be manually moved radially outward of the record from its position at the moment of plunger depression the turntable may revolve and it the stylus be brought into record contact at any point nearer the periphery of the record so much of the selection will be rendered as exists between the two points and only so much.

If the stylus be-moved to approximately the end of the selection on the record, with the plunger in raised position, and the plunger be then depressed to release the turntable and to lock the levers 17 and 18 together, and the stylus he then moved manually to the beginning ol the selection.y it follows that the tone arm may move from this last named position to the end ot the selection or until the lever 17 is engaged by the trip 12, the plunger being locked in depressed position up to this time. When such engagement between the trip 12 and lever 17 occurs a slight additional movement of the tone arm by the record will rock the bell-crank formed by the joined levers17 and 18, on the post 15, with enough force to overcome the power ot the spring 2t), thereby releasing the plunger from the lever 18 and permitting the spring 2() to lift the outer end of the lever 21 into braking position.

From the foregoing, it will be seen that the stylus must always'be in the position where it is desired that the record shall be stopped before the plunger is depressed to start the phonograph and that the stylus must thereafter be moved to the portion ot the selection whereat it is desired that rendition shall begin, and that only sueh portion of the selection as occurs between these two points will be rendered, whether it be the entire selection or only a. desired portion thereof, or whether it be an entile lection utilizing the entire record or a short selection utilizing only a portion of the record.

Further, while I have shown a` satisfactory detailed structure, it will be understood that l am not limited thereto but may malte changes thereover, provided that sneh changes do not depart .from the spirit ot the invention nor fall outside of the scope of the appended claims.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with a turntable an(l Lampes a member traveling thereover as saidturnthereover, said mechanism comprising ann element arranged to follow the movements ot' said member when `the turntable isat rest, and means for automatically locking said element in any piisition into which it has been moved by said member when said mechanism is rendered inoperative to permit the turntable to rotate, thereby to set said mechanism 'fior the selected movement.

Qi. ln a phonograph, the combination with a turntableaud a member traveling there`` over as said turntable rotates, of adjustable mechanism "for automatically i stopping the rotation oi said turn-table after a `predetermined movement of saidmember thereover, said mechanism comprising an :uljustable trip and means 'for automatically .lrwliing said trip fin any selected adjustment upon the ri-ilease of said turitt/abbi.`

3. The combination `with a turntable, a traveling member and brake mechanism, of adjustable means ttor eilecting the actuation o't said brake mechanism when said means is engaged by said traveling member, and connections between said means and said mechanism operating to lock said means in adjusted position upon the release of said brake mechanism. y i

4. The combination with va turntable, a traveling member and brake mechanism, of movable means for holding sa'id brake mechanism in released position, an arm normally adjustable relatively to said holding means and arranged to be engaged by said traveling member, and means for automatically locking said arm to said holding means as said brake is released. y

5. In a phonograph, the combination with a turntable, a member traveling over said turn-table, and brake mechanism, of means 'for holding said brake mechanism in released position, and a brake `actuating trip i movable with said traveling member when said turntable is stationary and means for automatically locking said trip to said holding means, upon the `release oi" said brake mechanism, in any position into which it has been moved by said traveling member.

G. ln a phonograph, the combination with a turntable, a tone arm traveling thereover as said turni-,able rotates, and a brake, of means for actuating said brake to stop the tlu'ntable, comprising a member in the path ot and free to follow the movements of the tene arm when the brake is set, and means automatically ope ated when the brake is released for electing an operative connection of said member to the other elements of the brake actuating means in any tone arm position.

7. ln a phonograph, the combination with a power-driven turntable, and a tonel arm tr vehng thereover as sald turntable rotates,

of' means llorstopping said turntable, comprising a memberin the path ofi and tree to follow the movement of; the tenearni when tlieiturntable is in stopped position, 'and means operating automatically as said` turntable is again brought under the control of itsfiliower drive to effect an operative connection between said member and the other elements ot the stopping n'ieausin any tone arm iosition.

Fi. n a phonogral'ih, the combination with a turl'itable, a tone arm traveling thereover as said turntable rotates, and turntable stopping means, of means vfor. automatically tripping said stopping means, comprising two members, one of which isarranged to move at all times with the tone arm and the other of which is arranged to follow the movement oil the ,first when the stopping means is operative and to be oifieratively connected to said` stripping means when the stopping means is in inoperative position, and means whereby the movement of the stopping .means into `iiunfierative position automatically efi'eetssueh operative connection in any tone` arm position. l

9. As an article of manufacture, for use on a phonograph, a support, a post, two levers pivoted on said post in normally independent relationship and provided with roughened contacting surfaces, a plunger, a lever in operative connection therewith and` .with said post, and a brake on said lever for said phonograph, depression of said plunger moving the respective end of said last named lever downwardly and the other end upwardly to force the roughened surfaces of said irst named levers into binding con tact to prevent relative movement of said levers. y

10. As an article of manufacture, for use on a phonograph, a support, a post, two levers pivoted on said post in nornntlly independent relationship and provided with roughened contacting surfaces, springs 'tor maintaining said levers in contacting relationship, a plunger, a lever in operative connection therewith and with said post beneath one of said springs and a brake on said last named lever for said phonograph, the actuation of said plunger depressing said brake and compressing said springs to force said first named levers into immovable relationshili.

lil. As an article of manufacture, for use on a phonograph, a support, a post, two levers pivoted on said post in normally independent relationship and provided with roughened contacting surfaces, a spring normally holding one of said levers yieldingly against rotation on said post, a plunger, a lever in. operative connection .there with and with said post, and a brake on said lastrnamed lever, depression of said plunger lowering said brake and forcing said first named levers into vrelatively immovable relationship;V

l2. As an article of manufacture, for use on a phonograph, a support, a post, tivo Y levers pivoted on said post in normally in- 1'()` slot, and provided With a shoulder normally 2'0" movable engagement.

dependent relationship, one of saidrlevers belng provldedivith an elongated slot at its outerV end, a plunger passed through said above said slot, a spring for draiving said lever into locking engagement With said shoulder when said plunger is depressed to prevent upward movement of said plunger, a lever in operative connection With said plunger and Withsaid post, and a brake on said last named lever, depression of'said plunger lowering said brake andY forcing saidV first named levers into relatively imranged to be moved by and to follow the movement of said member when the turntable is stationary, the other arm ot said lever being connected to said mechanism to govern the turntable stopping action of said mechanism, and means operating automatically as said controlling mechanism is moved into turntable starting position for locking said lever arms together.

14.111 a phonograph, the combination with a power-driven turntable, a tone arm traveling thereover as said turntable rotates, and mechanism for controlling the starting and stopping ot said turntable, ot a lever having one arm connected to said mechanism to govern the stopping action thereof and having` its other arm .tree to move relatively to said first arm about the lever fulcrum, when said turntable control mechanism is operative to maintain said turntable stationary, and also arranged to be moved by and to follow the movements of said tone arm, and means connected lto said control mechanism and operated by the movement thereof into starting` position l`or locking said lever arms together.

JOSEPH HOFFAY. 

